Tomas Berdych defeats Roger Federer at Sony Ericsson

Roger Federer suffered a shock 6-4 6-7 (3-7) 7-6 (8-6) defeat at the hands of Czech Tomas Berdych in the fourth round of the Sony Ericsson Open in Miami.

Top seed Federer was within two points of defeat at 5-6 in the second set but hit back to earn a match point in the deciding tie-break.

He failed to capitalise and a wayward forehand three points later gave victory to world number 20 Berdych.

Spain's Rafael Nadal and American Andy Roddick advanced to the last eight.

But Federer was left to reflect on his second surprise defeat since beating Britain's Andy Murray in the Australian Open final in January, having lost to Cypriot Marcus Baghdatis in the third round of his last tournaent at Indian Wells.

"I had tons of chances at the end. I tried everything I could. It is just not happening for me at the moment," said Federer.

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